Wonder if something isnt applied when not supposed to be.... Dont have flow diagram in front of me at moment.... did you test shift solenoids??

 

Do you have engine braking in first second and third with the gear selector in od? The forward sprag overruns in fourth gear if the overrunning clutch in the input drum is on in fourth it would cause this issue. Cross leak in input drum or valve body.

 

Yeah tested them. Replaced the pressure solenoids and the tcc solenoid due to being out of spec.

 

Forgot to check for engine braking in drive range. Was focused on other things. I think I'll definitely find my issue in the input drum. Just curious as to what else to look for. Just brain storming really before I tear into it again.

 

Check valve body and make sure it isnt warped and torqued properly